Switch box



Sept. 16, 1930. M. J. BEHMA 1,775,665

SWITCH BOX Filed Feb. 25, 1929 Attorney Patented Sept. 16, 1930 l UNITED STA-Tes- MERLE J'. BEHM, 0F TIFFIN, OHIO SWITCH Box Application led February 25, 1929. Serial No. 342,475.

This invention relates toewhat is known in the trade as a B-X switchbox, and it has more particular reference to-means provided on the opposite ends of the box so that it may be anchored in the opening in a wall whereby to adapt it for convenient and secure fasteninkg on wall board, laths, brick work and the li e.

As before indicated, the principal distinc- 10 tion in the structure, is the means for clamping the box in position, and in carrying out.

this feature of the invention, I have produced a novel and dependable structurewliich expedites mounting .of the box and insures permanent maintenance thereof on the support. I aim particularlyto provide atsimple'and inexpensive box clamping means including spaced clamping elements or jaws, there being a relatively rigid jaw and a relatively 2o movable jaw, the movable jaw bein swingably or hingedly mountedl on the ox and there being an adjusting screw provided for actuating it in the manner to permit it to be brought into firm clamping position after the switch box is inserted through lthe opening in the support.

The particular details constituting the alleged novelty will become more readily apparent from the following description andv drawings. l

In the drawings: Figure 1 is an end elevation of the switch box embodying clampingmeans constructed in accordance withv the present invention,

Figure 2 is a longitudinal sectional view showing one clampin device fastened andl the other one about to fastened,

Figure 3 is a horizontal sectional view, taken approximately upon the plane of the line 3-3 of Figure 2.

Figure 4, is a fragmentary top plan view of one end of the structure.

. In the drawings, the reference character 5 designates the stationary support,'which may be a wal1. This isv rovided with an opening for passage of the -X switch box 6. `The box is of ordinary construction. In accordance with the present invention, however, the

box has its end walls provided with outwardly extending ears 7 having screw threaded holes for accommodating the shank of an adjusting and retaining bolt 8. The clamping means at each end of the box lis the same land 'a description of one willsufce vfor both. I first call attention to the sta- 55 tionary jaw plate 9, which extends out at right angles from the end of the box and in a substantial plane with the adjacent ear.

The plate has depending slotted ends 10 as e seen in Figure l and clamping screws 11 as o provided for securing these to the end of the box. This allows the jaw to be adjusted.

The relatively movable jaw member is designated generally bythe reference character 12.` It comprises-al body formed' in 4spaced clamping leaves 13, joined to tubular bearings 'la These bearings surround the projecting end portions of a cross-head 16, which is threaded on the stem of the adjusting screw. A web portion 17 joins the bearings 70 14 together-and is bent in such a manneras to provide. an abutment for the .end of the screw. Normally the leaves 13 are against the end of the box as shown in Figure 1 and also at the left in Figure 2 and the lower l5 end of the screw is in engagement with the abutmentlll Obviously then, by threading the screw downwardly, pressure is exerted upon the abutmentbetween the leaves 13 outyvardly to a right angular clamping position. At the same time,the cross head is fed upwardly on the stem of the screwtojmove the entire clampingjaw 12 up to the clamping position seen in Figure 2 at the right` `When in this position, the screw passes down beyond the edge of the abutment `and prevents .further swinging of the jaw member.

Consequently, a tight clamping action may be effected. l A

.A careful consideration of the description in conjunctionwith the drawings will en Y able t reader to obtain a cle'ar understanding. o the construction, operation, features4 and advantages of the improved clamping .95

means.

Therefore a more lengthy regarded as unnecessary. p

e Minor changes in the shape, size and rear-` rangement of details coming within the eld description is of invention claimed may be resorted to, in actual practice, if desired.

I claim: y

1. In a structure of the class described, a switch box provided with an outstanding apertured ear, a relatively stationary clamping jaw 'disposed in a substantial plane with said ear, a bolt mounted on said ear, a cross head carried by said bolt, and a relatively movable clamping said cross head.

2. In a structure of the class described, a

jaw svvingably mounted on switch box provided with an outstanding ap-v ertured ear, a relatively stationary clamping jaw disposed in a substantial plane with said ear, a bolt mounted on saidear, a cross head carried by said bolt, and a relatively movable clamping jaw swingably mounted on said cross head, said relatively movable jaw embodying an abutment with Which the end of the bolt isengageable for swinging the movable jaw outwardly.

3. In a structure of the class described, a box having an outstanding apertured ear on one end, a. relatively stationary clamping jaw adjustably mounted on said end and disposed in a substantial plane with said ear, a bolt threaded through the ear, a cross head on the bolt, a complemental relatively movable clamping jaw including spaced bearing portions'surrounding the extended ends of said cross head and provided with clamping leaves, and an intervening web portion between said bearing portions, said Webs being bent in a manner to provide an abutment with which the adjacent end of the bolt is engageable.

In testimony whereof I alix my signature.

, MERLE J .,BEHM. v 

